Bug 219140

Summary:	Support WebGL's base_vertex_base_instance draft extensions
Product:	WebKit	Reporter:	Kenneth Russell <kbr>
Component:	WebGL	Assignee:	Nobody <webkit-unassigned>
Status:	RESOLVED FIXED
Severity:	Normal	CC:	dino, jdarpinian, kkinnunen, msokalski, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified
Bug Depends on:	219139, 241347, 241748
Bug Blocks:

Description Kenneth Russell 2020-11-18 18:45:06 PST

https://www.khronos.org/registry/webgl/extensions/WEBGL_draw_instanced_base_vertex_base_instance/ and https://www.khronos.org/registry/webgl/extensions/WEBGL_multi_draw_instanced_base_vertex_base_instance/ are draft WebGL extensions offering the BaseVertex / BaseInstance functionality commonly supported by lower-level graphics APIs, including OpenGL.

These extensions are well supported in ANGLE, supported in Chromium behind a flag, and need to be similarly exposed in WebKit's WebGL implementation behind a flag in order to demonstrate to the WebGL working group that they're supportable in multiple browser implementations.

Comment 1 Radar WebKit Bug Importer 2020-11-25 21:34:38 PST

<rdar://problem/71742597>

Comment 2 EWS 2022-06-27 01:10:44 PDT

Committed 251862@main (ad4e2e1bb0cb): <https://commits.webkit.org/251862@main>

Reviewed commits have been landed. Closing PR #1767 and removing active labels.